Aggregate data by dimension and without dimension at the same view

Hi All, 

I have split Sales into Categories. I would like to have another bar that shows the total sales in the same view. The bar will be the addition of all the the sales of the three categories - {Sum(Sales)}. 

Something like this -  

Total -  2297201

Furniture - 742,000

Office Supplies - 719,047

Technology - 836154

Is there a way to achieve it without doing a union or duplicating the data?  

I am attaching the workbook for your kind reference.  

Thank you all. 

Regards,

Rishi Saka